857144051 has 2 divisors, whose sum is σ = 857144052. Its totient is φ = 857144050.

The previous prime is 857144009. The next prime is 857144111. The reversal of 857144051 is 150441758.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857144051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (857144551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428572025 + 428572026.

It is an arithmetic number, because the mean of its divisors is an integer number (428572026).

Almost surely, 2^857144051 is an apocalyptic number.

857144051 is a deficient number, since it is larger than the sum of its proper divisors (1).

857144051 is an equidigital number, since it uses as much as digits as its factorization.

857144051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 857144051 is about 29277.0225774412. The cubic root of 857144051 is about 949.9146926169.

The spelling of 857144051 in words is "eight hundred fifty-seven million, one hundred forty-four thousand, fifty-one".